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2013 MANUFACTURED FOR: MITSUBISHI ELECTRIC US, INC. TECHNICAL & SERVICE MANUAL Series PVFY Vertical Concealed Indoor Unit “B” <Indoor unit> Models PVFY-P12E00B, PVFY-P18E00B PVFY-P24E00B, PVFY-P30E00B PVFY-P36E00B, PVFY-P48E00B PVFY-P54E00B CONTENTS SAFETY PRECAUTIONS ························· 1 1. FEATURES············································3 2. PART NAMES AND FUNCTIONS ········ 4 3. SPECIFICATION ··································· 7 4. OUTLINES AND DIMENSIONS············ 9 5. WIRING DIAGRAM ····························· 12 6. REFRIGERANT SYSTEM DIAGRAM···· 13 7. TROUBLESHOOTING ························ 14 For use with R410A only Specifications are subject to change without notice. © 2013 Mitsubishi Electric US, Inc. SAFETY PRECAUTIONS 1. Before installation and electric work s Before installing the unit, make sure you read all the “Safety precautions”. s The “Safety precautions” provide very important points regarding safety. Make sure you follow them. s This equipment may not be applicable to EN61000-32: 1995 and EN61000-3-3: 1995. s This equipment may have an adverse effect equipment on the same electrical supply system. s Please report to or take consent by the supply authority before connection to the system. Symbols used in the text • • • • • • Warning: Describes precautions that should be observed to prevent danger of injury or death to the user. Caution: Describes precautions that should be observed to prevent damage to the unit. • • Symbols used in the illustrations : Indicates an action that must be avoided. : Indicates that important instructions must be followed. : Indicates a part which must be grounded. • : Indicates that caution should be taken with rotating parts. (This symbol is displayed on the main unit label.) <Color: Yellow> : Beware of electric shock (This symbol is displayed on the main unit label.) <Color: Yellow> • Warning: Carefully read the labels affixed to the main unit. • • • • • • Warning: Ask the dealer or an authorized technician to install the air conditioner. - Improper installation by the user may result in water leakage, electric shock, or fire. Install the air unit at a place that can withstand its weight. - Inadequate strength may cause the unit to fall down, resulting in injuries. Use the specified cables for wiring. Make the connections securely so that the outside force of the cable is not applied to the terminals. - Inadequate connection and fastening may generate heat and cause a fire. Prepare for typhoons and other strong winds and earthquakes and install the unit at the specified place. - Improper installation may cause the unit to topple and result in injury. Always use an air cleaner, humidifier, electric heater, and other accessories specified by Mitsubishi Electric. - Ask an authorized technician to install the accessories. Improper installation by the user may result in water leakage, electric shock, or fire. 2 • Never repair the unit. If the air conditioner must be repaired, consult the dealer. - If the unit is repaired improperly, water leakage, electric shock, or fire may result. Do not touch the heat exchanger fins. - Improper handling may result in injury. When handling this product, always wear protective equipment. EG : Gloves, full arm protection namely boiler suit, and safety glasses. - Improper handling may result in injury. If refrigerant gas leaks during installation work, ventilate the room. - If the refrigerant gas comes into contact with a flame, poisonous gases will be released. Install the air conditioner according to this Installation Manual. - If the unit is installed improperly, water leakage, electric shock, or fire may result. Have all electric work done by a licensed electrician according to “Electric Facility Engineering Standard” and “Interior Wire Regulations”and the instructions given in this manual and always use a special circuit. - If the power source capacity is inadequate or electric work is performed improperly, electric shock and fire may result. Securely install the cover of control box and the panel. - If the cover and panel are not installed properly, dust or water may enter the outdoor unit and fire or electric shock may result. When installing and moving the air conditioner to another site, do not charge the it with a refrigerant different from the refrigerant (R410A) specified on the unit. - If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle may malfunction and the unit may be damaged. If the air conditioner is installed in a small room, measures must be taken to prevent the refrigerant concentration from exceeding the safety limit even if the refrigerant should leak. - Consult the dealer regarding the appropriate measures to prevent the safety limit from being exceeded. Should the refrigerant leak and cause the safety limit to be exceeded, hazards due to lack of oxygen in the room could result. When moving and reinstalling the air conditioner, consult the dealer or an authorized technician. - If the air conditioner is installed improperly, water leakage, electric shock, or fire may result. After completing installation work, make sure that refrigerant gas is not leaking. - If the refrigerant gas leaks and is exposed to a fan heater, stove, oven, or other heat source, it may generate noxious gases. Do not reconstruct or change the settings of the protection devices. - If the pressure switch, thermal switch, or other protection device is shorted and operated forcibly, or parts other than those specified by Mitsubishi Electric are used, fire or explosion may result. Specifications are subject to change without notice. © 2013 Mitsubishi Electric US, Inc. • 2. Warning: Note the following when building a heater in the air conditioning system. - Leave enough space between units for proper ventilation so that the indoor unit temperature does not exceed 40°C when windless. - Keep the heater clean, and take appropriate measures so that the indoor unit does not suck in the dust particles that accumulate on the heater. - Use the optional heater cable (PAC-YU25HT) to perform an interlocked operation with indoor units. - Do not build a heater inside the indoor unit. Caution: • • Recommended circuit Wiring diagram R 1-phase power supply 88H FS1 H1 88H FS2 FS1 H2 S 208V, 230V/60Hz R S FS2 88H 26H • • Control board CN24 • FS1, 2 ----- Thermal fuse H1, H2 ----- Heater 26H --------- Overheat protection thermostat • 88H --------- Electromagnetic contactor • • • • 3 Precautions for devices that use R410A refrigerant Do not use the existing refrigerant piping. - The old refrigerant and refrigerator oil in the existing piping contains a large amount of chlorine which may cause the refrigerator oil of the new unit to deteriorate. Use refrigerant piping made of C1220 (Cu-DHP) phosphorus deoxidized copper as specified in the *JIS H3300 “Copper and copper alloy seamless pipes and tubes”. In addition, be sure that the inner and outer surfaces of the pipes are clean and free of hazardous sulphur, oxides, dust/dirt, shaving particles, oils, moisture, or any other contaminant. - Contaminants on the inside of the refrigerant piping may cause the refrigerant residual oil to deteriorate. *JIS: Japanese Industrial Standard Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before brazing. (Store elbows and other joints in a plastic bag.) - If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and compressor trouble may result. Use ester oil, ether oil or alkylbenzene (small amount) as the refrigerator oil to coat flares and flange connections. - The refrigerator oil will degrade if it is mixed with a large amount of mineral oil. Use liquid refrigerant to fill the system. - If gas refrigerant is used to seal the system, the composition of the refrigerant in the cylinder will change and performance may drop. Do not use a refrigerant other than R410A. - If another refrigerant (R22, etc.) is used, the chlorine in the refrigerant may cause the refrigerator oil to deteriorate. Use a vacuum pump with a reverse flow check valve. - The vacuum pump oil may flow back into the refrigerant cycle and cause the refrigerator oil to deteriorate. Do not use the following tools that are used with conventional refrigerants. (Gauge manifold, charge hose, gas leak detector, reverse flow check valve, refrigerant charge base, vacuum gauge, refrigerant recovery equipment) - If the conventional refrigerant and refrigerator oil are mixed in the R410A , the refrigerant may deteriorated. - If water is mixed in the R410A , the refrigerator oil may deteriorate. - Since R410A does not contain any chlorine, gas leak detectors for conventional refrigerants will not react to it. Do not use a charging cylinder. - Using a charging cylinder may cause the refrigerant to deteriorate. Be especially careful when managing the tools. - If dust, dirt, or water gets in the refrigerant cycle, the refrigerant may deteriorate. Specifications are subject to change without notice. © 2013 Mitsubishi Electric US, Inc. 1 FEATURES Series PVFY Vertical Concealed Indoor Unit “B” Indoor unit Models 3 4 Cooling capacity/Heating capacity kW Btu / h PVFY-P12E00B 3.5 / 4.0 12,000 / 13,500 PVFY-P18E00B 5.3 / 5.9 18,000 / 20,000 PVFY-P24E00B 7.0 / 7.9 24,000 / 27,000 PVFY-P30E00B 8.8 / 10.0 30,000 / 34,000 PVFY-P36E00B 10.6 / 11.7 36,000 / 40,000 PVFY-P48E00B 14.1 / 15.8 48,000 / 54,000 PVFY-P54E00B 15.8 / 17.6 54,000 / 60,000 Specifications are subject to change without notice. © 2013 Mitsubishi Electric US, Inc. 2 PART NAMES AND FUNCTIONS l Indoor (Main) Unit Horizontal Left Vertical [PAR-21MAAU] l Remote controller l Once the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button. l Operation buttons 1 TEMP. 2 3 MENU BACK PAR-21MAA MONITOR/SET ON/OFF ON/OFF FILTER DAY CHECK TEST OPERATION CLOCK B 7 A 0 CLEAR C D 1 2 3 4 [Set Temperature] Button [Timer Menu] Button [Monitor/Set] Button [Mode] Button [Return] Button [Timer On/Off] Button [Set Day] Button 5 6 7 8 9 4 5 6 8 [Louver] Button [Operation] Button [Fan Speed] Button [Airflow Up/Down] Button [Ventilation] Button [Operation] Button [Check/Clear] Button 9 0 [Test run] Button A [Filter] Button [ ] Button B [ON/OFF] Button C Position of built-in room temperature D [Set Time] Button • Never expose the remote controller to direct sunlight. Doing so can result in the erroneous measurement of room temperature. • Never place any obstacle around the lower right-hand section of the remote controller. Doing so can result in the erroneous measurement of room temperature. 5 Specifications are subject to change without notice. © 2013 Mitsubishi Electric US, Inc. [Display] A CENTRALLY CONTROLLED E B ON C STAND BY DEFROST 6 C ERROR CODE NOT AVAILABLE TEMP. G A B C D E F G H I J K L M N O P 1Hr. OFF CLOCK CHECK C P Current time/Timer Centralized control Timer OFF Timer indicator Operation mode: COOL, DRY, “Locked” indicator Set temperature Power ON Louver Ventilation Filter sign Set effective for 1 hr. Sensor position Room temperature Airflow Fan speed FILTER CHECK MODE TEST RUN FUNCTION M F K ON/OFF O L I N HQJ AUTO, FAN, D HEAT Specifications are subject to change without notice. © 2013 Mitsubishi Electric US, Inc. 3 SPECIFICATIONS 3-1. PVFY-P-E00B Specifications PVFY-P-E00B Specifications PVFYP12E00B Model Name PVFYP18E00B PVFYP24E00B Power Source PVFYP30E00B PVFYP36E00B PVFYP48E00B PVFYP54E00B 1-phase, 208 / 230V, 60Hz Cooling Capacity Btu/h *1 12,000 18,000 24,000 30,000 36,000 48,000 54,000 Heating Capacity Btu/h *1 13,500 20,000 27,000 34,000 40,000 54,000 60,000 0.08 0.11 0.14 0.19 0.23 0.29 0.32 Power Consumption Current Cooling kW Heating kW 0.08 0.11 0.14 0.19 0.23 0.29 0.32 Cooling A 0.42 / 0.38 0.63 / 0.57 0.79 / 0.72 1.07 / 0.97 1.21 / 1.10 1.62 / 1.47 1.63 / 1.48 Heating A 0.42 / 0.38 0.63 / 0.57 0.79 / 0.72 1.07 / 0.97 1.21 / 1.10 1.62 / 1.47 1.63 / 1.48 0.52 0.78 0.99 1.33 1.51 2.02 2.04 15 15 15 15 15 15 MCA (208 / 230V) MOCP Dimensions Net Weight A Height Inches 42-3/4 Width Inches 17-3/4 Depth Inches Unit Pounds 98 External Static Pressure 341 - 391 469 431 - 508 559 In. WG 120 160 168 504 - 642 716 702 - 844 901 829 - 1001 1066 1072 - 1310 1414 1224 - 1519 1585 (Size P12 = 0.20, 0.40, 0.60), (Sizes P18 - P54 = 0.30, 0.50, 0.80) Motor Type Drain Pipe Dimension 115 Forward Curved Blower x 1 Airflow Rate *2 Refrigerant Pipe Dimensions 24-1/2 Aluminum Fin and Copper Tube Type x Qty. Sound Data *3 (Low - Med High) 21 21 3/4 108 Heat Exchanger Fan 58-3/4 21 88 15 48 High Efficiency DC (ECM) Pressure dB(A) 33 - 33 - 34 35 - 35 - 36 37 - 38 - 39 37 - 39 - 39 37 - 38 - 39 38 - 39 - 39 40 - 42 - 42 Power dB(A) 47 - 47 - 48 49 - 49 - 50 51 - 52 - 54 51 - 53 - 54 51 - 53 - 53 52 - 53 - 54 54 - 56 - 57 Liquid (High Pressure) (Brazed) Inches 1/4 3/8 Gas (Low Pressure) (Brazed) Inches 1/2 5/8 Primary Secondary Inches 3/4 FPT 3/4 FPT Notes: *1 Cooling/Heating capacity indicates the maximum value at operation under the following conditions: Cooling | Indoor: 80˚ F (27˚ C) DB/67˚F (19˚ C) WB; Outdoor: 95˚F (35˚ C) DB. Heating | Indoor: 70˚ F (21˚ C) DB; Outdoor: 47˚F (8˚ C) DB/43˚F (6˚ C) WB. *2 Airflow rate / sound pressure levels are at low-mid-high fan speed. *3 Measured at medium static setting. 7 Specifications are subject to change without notice. © 2013 Mitsubishi Electric US, Inc. 3-2. Electrical Parts Specifications Model Parts name Symbol PVFYP12E00B PVFYP18E00B PVFYP24E00B PVFYP30E00B PVFYP36E00B PVFYP54E00B PVFYP48E00B Transformer T1 (Primary) 240V 60Hz (Secondary) (23.5V 0.9A) Transformer T2 (Primary) 208/230V 60Hz (Secondary) (27V) Room temperature TH21 thermistor Resistance 0°C[32°F]/15k,10°C[50°F]/9.6k,20°C[68°F]/6.3k,25°C[77°F]/5.4k, 30°C[86°F]/4.3k,40°C[104°F]/3.0k Liquid pipe thermistor TH22 Resistance 0°C[32°F]/15k,10°C[50°F]/9.6k,20°C[68°F]/6.3k,25°C[77°F]/5.4k, 30°C[86°F]/4.3k,40°C[104°F]/3.0k Gas pipe thermistor Resistance 0°C[32°F]/15k,10°C[50°F]/9.6k,20°C[68°F]/6.3k,25°C[77°F]/5.4k, 30°C[86°F]/4.3k,40°C[104°F]/3.0k TH23 Fuse(Indoor FUSE controller board) Fan motor (with Innerthermostat) MF1 Linear expansion valve LEV Power supply terminal bed Transmission terminal bed 8 250V 6.3A 4-pole, 1/3 hp 4-pole, 1/3 hp 4-pole, 1/3 hp DC12V Stepping motor drive port dimension 3.2 (0~2000pulse) EDM-402MD 4-pole, 1/3 hp 4-pole, 1/2 hp 4-pole, 3/4 hp 4-pole, 3/4 hp DC12V Stepping motor drive port dimension 5.2 (0~2000pulse) EDM-804MD TB2 (L1,L2,G) 330V 30A TB5 TB15 (1,2),(M1,M2,S) 330V 30A 6.4 (0~2000 pulse) EDM-A0Y Specifications are subject to change without notice. © 2013 Mitsubishi Electric US, Inc. 4 OUTLINES AND DIMENSIONS PVFY-P12,18,24E00B Units: Inches 9 Specifications are subject to change without notice. © 2013 Mitsubishi Electric US, Inc. PVFY-P30,36E00B Units: Inches 10 Specifications are subject to change without notice. © 2013 Mitsubishi Electric US, Inc. PVFY-P48,54E00A Units: Inches 11 Specifications are subject to change without notice. © 2013 Mitsubishi Electric US, Inc. BCD SW2 SYMBOL MF C I.B. TB2 TB5 TB15 F901 ZNR1,ZNR901 T LEV TH21 TH22 TH23 SW11 SW12 SW14 SW1 SW2 SW3 SW4 SW5 SW7 SW8 X01,X04 X07 <T1>,T2,T3 CN52 (Green) 0 1 9 NAME SW1 (1st digit) SW11 NOTE: LED2 21 TH22 21 1 NAME LEV 65 4 3 21 3 T 1 CN3T(Red) Connector Connector Connector Connector Connector Connector (central control) Connector (HA terminal-A) Connector (central control) Connector (remote indication) Power supply (I.B.) Power supply (Remote controller) 2 1 CN60(White) 2.Mark indicates terminal bed, connector, board insertion connector or fastening connector of control board. SYMBOL CNV CN22 CN24 CN25 CN27 CN32 CN41 CN51 CN52 LED1 LED2 TH23 21 CN20(Red) CN21(White) CN29(Black) CN31(White) TH21 SW3 (2nd digit) SW12 0 1 9 (White) LED1 (Green) (Yellow) (White) CN32 CN22 CN24 CN25 Fan motor Capacitor (for MF) Indoor controller board Power source terminal bed Transmission terminal bed Transmission terminal bed Fuse AC250V 6.3A T Varistor Transformer Electronic linear expan. valve Thermistor (inlet temp.detection) Thermistor (piping temp.detection/liquid) Thermistor (piping temp.detection/gas) Switch (1st digit address set) Switch (2nd digit address set) Switch (connection No.set) Switch (for mode selection) Switch (for capacity code) Switch(for mode selection) Switch(for model selection) Switch(for voltage selection) Switch(for model selection) Switch(for mode selection 3) Aux.relay Terminal SYMBOL EXPLANATION SW4 SW7 (Connection No.) SW14 7 8 9A SW5 SW8 (White) CN51 7 8 CN27 CN41 (Red) 6 F 0 12 E 5 6 7 8 (White) 4 345 31 R3 ) 5 3 1 CND(Red) DSA1 CN2M (Blue) ZNR1 N 5 G 3 4 24 VAC Common 208/230V 60Hz Ground 208/230V 60Hz N 4 5 L G 3 C 2 1 FAN MOTOR Red Blue Green N 4 5 L G 3 C 2 1 FAN MOTOR For field selected 0.80 esp (P12 = .60 esp) change connection as shown Red Blue Green For field selected 0.30 esp (P12 = .20 esp) change connection as shown Red Blue L C 2 1 FAN MOTOR PVFY-P12,18,24,30,36,48,54E00B L2 G TB2 L1 M2 M1 For 208V power supply, switch the transformer lead marked 230V with the one marker 208V. Reattach wire nut to bare wire. POWER SUPPLY 208/230V 60Hz BREAKER(15A) FUSE(15A) PULL BOX TO NEXT INDOOR UNIT TO OUTDOOR UNIT BC CONTROLLER REMOTE CONTROLLER TB5 (TRANSMISSION TERMINAL BED) TB15 (TRANSMISSION TERMINAL BED) 2 TO MA REMOTE 1 CONTROLLER S(SHIELD) T2 24 Volts AC 2 1 3 1 24 VAC As shipped .50 esp connection (P12 = .40 esp) Low 2 (White) CN90 1 3 5 79 Green R2 Med. Fan Relays R1 31 CNP(Blue) High (White) CNT ( CN3A (Blue) F 901 AC250V 6.3A T I.B. INSIDE SECTION OF CONTROL BOX X01 X06 X07 X05 X04 ZNR901 CN7V(White) 5 4 3 2 1 208V 5 6 2 3 L2 4 12 2 3 230V 5 WIRING DIAGRAM PVFY-P12,· P18, P24, P30, P36, P48, P54E00B Specifications are subject to change without notice. © 2013 Mitsubishi Electric US, Inc. 6 REFRIGERANT SYSTEM DIAGRAM Gas pipe thermistor TH23 Gas pipe Liquid pipe thermistor TH22 Flare connection Heat exchanger Linear expansion valve Strainer (#100mesh) Strainer (#100mesh) Room temparature thermistor TH21 mm <in.> Capacity Item PVFY-P12,18E00B Gas pipe R410A ø 12.7 (1/2) Liquid pipe R410A ø 6.35 (1/4) mm <in.> Capacity Item PVFY-P24, 30, 36, 45, 54E00B Gas pipe R410A ø 15.88 (5/8) Liquid pipe R410A ø 9.52 (3/8) Electrical Component Location Low Fan Speed Relays Med Circuit Board High M1 M2 S L1 Line Voltage Terminal Strip 208/230V 1ph. 13 G L2 1 2 TB15 Terminal T1 24 VAC TB5 Terminal T2 27 VAC Transformers Specifications are subject to change without notice. © 2013 Mitsubishi Electric US, Inc. 7 TROUBLESHOOTING 7-1. How to check the parts Parts name Check points Room temparature thermistor (TH21) Liquid pipe thermistor (TH22) Gas pipe thermistor (TH23) Disconnect the connector, then measure the resistance using a tester. (Sorrounding temperature 10°C~30°C[50°F~86°F]) Transformer 24V Disconnect the connector and measure the resistance using a tester. CNT 1 2 3 T Red Normal 4.3k ~9.6k Abnormal Open or short CN3T Blue 1 2 3 Blue White Normal App.45 App.1 CNT(1)-(3) CN3T(1)-(3) L2 Black For 208V power supply, switch the transformer lead marked 230V with the one marker 208V. Reattach wire nut to bare wire. Abnormal Open or short Make sure the proper transformer lead is connected for the proper supply voltage. See diagram at left. 230 V White 208 V Orange Transformer 27VAC Measure the supply voltage to the transformer. The supply voltage should be between 187 and 229 volts if the transformer is connected to a 208 volt power supply. The reading should be between 207 and 253 volts if connected to a 230 volt power supply. 208/230VAC T2 With the proper supply voltage, the transformer output voltage should be approximately 27 volts. If no voltage is measured, replace the transformer. 27 Volts AC 27 VAC Fan Relays R R2 R3 Med. R Low R L2 Black For 208V power supply, switch the transformer lead marked 230V with the one marker 208V. Reattach wire nut to bare wire. 230 V White Common lead 208 V Orange 208/230 volt supply from circuit board 1 3 5 7 9 208/230VAC High R T2 27 Volts AC 27 VAC 24 VAC to motor speeds Linear expansion valve CN60 White Yellow Orange LEV Blue Red Brown 14 1 2 3 4 5 6 (Refer to the thermistor) There are 3 fan relays. One relay for each high, medium and low speed operation. The fan relays have a 208/240 V AC coil that is energized by the circuit board. The relay switches a 24 V AC circuit, which provides the speed signal for the motor. The relay energized will be determined by which speed is selected at the controller. To check operation: Make sure power to the system is on and the unit is not in standby mode. 1. Select high, medium or low speed at the controller. 2. At the corresponding relay based on the speed selected, check the voltage across the relay coil which is supplied from the circuit board. 3. If 208/230 V is measured, go on to step 4. If no voltage is measured, replace the circuit board. 4. If there is voltage present, the relay contact should be closed. 5. To check the contact. Turn power off. Remove the 24 V wires from relay contact. 6. Reapply voltage and select the fan speed. Check the continuity across the contact. If there is no continuity across the contact, replace the relay. If there is continuity across the contact, the relay is OK. Refer to the motor troubleshooting section. Disconnect the connector then measure the resistance valve using a tester. Refer to the next page for a detail. Normal Abnormal (2)-(6) (1)-(5) (3)-(5) (4)-(6) White-Red Yellow-Brown Orange-Red Blue-Brown Open or short 150 10% Specifications are subject to change without notice. © 2013 Mitsubishi Electric US, Inc. <Thermistor Characteristic graph> Thermistor for lower temperature < Thermistor for lower temperature > 50 Room temparature thermistor(TH21) Liquid pipe thermistor(TH22) Gas pipe temparature thermistor(TH23) 1 273+t 32°F 15k 50°F 9.6k 68°F 6.3k 77°F 5.2k 86°F 4.3k 104°F 3.0k Rt=15exp { 3480( 0°C 10°C 20°C 25°C 30°C 40°C 2% Resistance (k 3% Thermistor R0=15k Fixed number of B=3480k ) 40 1 )} 273 30 20 10 0 -20 -4 -10 14 0 10 20 30 32 50 68 86 Temperature 40 50 (°C) 104 122 [°F] Linear expansion valve 1 Operation summary of the linear expansion valve. • Linear expansion valve open/close through stepping motor after receiving the pulse signal from the indoor controller board. • Valve position can be changed in proportion to the number of pulse signal. <Connection between the indoor controller board and the linear expasion valve> Controller board DC12V Brown 6 Red 5 ø4 Blue 4 ø4 ø3 Orange 3 ø3 ø2 Yellow 2 ø2 ø1 White 1 ø1 Linear expansion valve 4 M 6 5 2 1 White Red 3 Orange Blue Brown Yellow Drive circuit Connector(CN60) 15 Specifications are subject to change without notice. © 2013 Mitsubishi Electric US, Inc. <Output pulse signal and the valve operation> Output Output (Phase) 1 2 3 4 ø1 ON OFF OFF ON ø2 ON ON OFF OFF ø3 OFF ON ON OFF ø4 OFF OFF ON ON Closing a valve : 1 2 3 4 1 Opening a valve : 4 3 2 1 4 The output pulse shifts in above order. 1. When linear expansion valve operation stops, all output phase become OFF. 2. At phase interruption or when phase does not shift in order, motor does not rotate smoothly and motor will locks and vibrates. Linear expansion valve operation C D Valve position (capacity) When the switch is turned on, 2200 pulse closing valve signal will be send till it goes to A point in order to define the valve position. When the valve move smoothly, there is no noise or vibration occurring from the linear expansion valve : however, when the pulse number moves from E to A or when the valve is locked, more noise can be heard than normal situation. Noise can be detected by placing the ear against the screw driver handle while putting the screw driver to the linear expansion valve. Close Open 2000 pulse Opening a valve all the way A E Pulse number B Extra tightning (80~100pulse) Trouble shooting Symptom Check points Countermeasures Operation circuit fail- Disconnect the connector on the controller board, then con- Exchange the indoor conure of the micro nect LED for checking. troller board at drive circuit processor. failure. 6 5 4 3 2 1 1k LED Pulse signal will be sent out for 10 seconds as soon as the main switch is turn on. If there is LED with lights on or lights off, it means the operation circuit is abnormal. Linear expansion valve mechanism is locked. Motor will idle and make ticking noise when motor is operated Exchange the linear while the linear expansion valve is locked. This ticking sound expansion vale. is the sign of the abnormality. Short or breakage of Measure the resistance between the each coil (red-white, the motor coil of the red-orange, brown-yellow, brown-blue) using a tester. It is linear expansion normal if the resistance is in the range of 150 10%. valve. Exchange the linear expansion valve. Valve doesn´t close To check the linear expansion valve, operate the indoor unit in If large amount of refrigercompletely (thermis- fan mode and at the same time operate other indoor units in ation is leaked, exchange cooling mode, then check the pipe temperature <liquid pipe the linear expansion valve. tor leaking). temperature> of the indoor unit by the outdoor multi controller board operation monitor. During fan operation, linear expansion valve is closed completely and if there are Thermistor some leaking, detecting temperature of the (TH21) thermistor will go lower. If the detected Linear expansion temperature is much lower than the tempervalve ature indicated in the remote controller, it means the valve is not closed all the way. It is not necessary to exchange the linear expansion valve, if the leakage is small and not making any trouble. Wrong connection of Check the color of lead wire and missing terminal of the con- Disconnect the connector nector. at the controller board, the connector or then check the continuity. contact failure. 16 Specifications are subject to change without notice. © 2013 Mitsubishi Electric US, Inc. 7-2. Fan Motor Troubleshooting All Models If the motor rocks back and forth on start up, this is normal―do not replace the motor. The motor may surge if operating outside the design static pressure range. Verify that the system design static matches the selected motor static pressure settings. The system is noisy and does not change speeds based on commands from the remote controller or the indoor unit is going into freeze protection cycle. Check to make sure the airflow settings are correct for the installation per the indoor unit specifications. First remove the system filter and check that all dampers and diffusers are open. If after removing the filter this corrects the problem, change or clean the filter. Also, check the indoor unit heat exchanger and clean as necessary. If none of this corrects the problem, check the static pressure of the system. The static pressure should fall within the guidelines given on the airflow charts. If it’s outside the parameters given on these charts, correct the airflow problem. Make sure the static pressure setting on the motor matches the system requirements. If the above checks do not solve the problem, check that the supply voltage applied to the motor is correct. Measure voltage at the (L), (G), (N) connector shown on the diagram below. The motor supply voltage should be + or -10% of the nominal 208/230VAC rating. If the supply voltage is not within this range, correct this before any further troubleshooting. Fan Relays R1 R2 R3 High Med. Low 24 VAC 24 VAC to motor speeds As shipped .50 esp connection (P12 = .40 esp) FAN MOTOR 1 Green Blue Red C 2 L 3 G 4 N 24 VAC Common 208/230V 60Hz Ground 208/230V 60Hz 5 For field selected .30 esp (P12 = .20 esp) change connections as shown FAN MOTOR Green 1 Blue Red C 2 L 3 G 4 N 5 For field selected .80 esp (P12 = .60 esp) change connections as shown FAN MOTOR 1 Green Blue Red C 2 L 3 G 4 N 5 The motor does not run. Check for the proper line voltage power supply and ground at the (L), (G), and (N) connections. Correct any voltage issues before proceeding to the next step. Model Available Ext. Static (In. W.G.) PVFY-P12 PVFY-P18 0.20 0.30 0.40 * 0.50 * 0.60 0.80 0.30 0.30 0.50 * 0.50 * 0.80 0.80 Speed selections on the blower PVFY-P24 motor are0.30done 0.50 by* 24 volt 0.80 supply to the motor terminals. The low voltage connections are pro0.30 PVFY-P30 0.50 * 0.80 grammed for the operating characteristics as shown in the chart above. 0.30 PVFY-P36 0.50 * 0.80 PVFY-P48 PVFY-P54 Turn the indoor unit on and set* Factory to any Setting mode that will normally run the fan. (Heat, Cool or Fan) If there is no 24 volt power supply between terminals 2, 3, or 4 and C common, check the wire(s) from the relays located in the control box. If the line voltage supply is within range and 24 volts is supplied to any of the connector combinations shown in the chart above and the motor does not operate, replace the motor. Specifications are subject to change without notice. 17 © 2013 Mitsubishi Electric US, Inc. 7-3. Dip Switch Settings Switch Pole Remarks OFF Thermistor<Intake temperature detection>position Built-in remote controller Indoor unit 2 Filter clogging detection Provided Not provided Address board <At delivery> ON OFF 3 Filter life 2,500hr 100hr 4 Air intake Effective Not effective Remote indication switching Thermostat ON signal indication Fan output indication Humidifier control Always operated while the heat is ON Operated depends on the condition Air flow Low Extra low 8 Heat thermostat OFF Setting air flow Reset to SW1-7 9 Auto reset function Effective Not effective Power ON/OFF Effective Not effective 10 1 2 3 4 5 6 7 8 9 10 MODELS SW2 Capacity 1~6 code setting SW3 Function 1~10 Selection SW4 Unit 1~4 Selection 18 ON 1 SW1 5 Mode Selection 6 7 Note Operation by switch Function SW2 PVFYP12E00B ON OFF PVFYP18E00B ON OFF PVFYP24E00B ON OFF MODELS SW2 ON OFF 1 2 3 4 5 6 PVFYP30E00B ON OFF 1 2 3 4 5 6 PVFYP36E00B MODELS Indoor controller board SW2 ON OFF 1 2 3 4 5 6 PVFYP48E00B ON OFF 1 2 3 4 5 6 PVFYP54E00B Set while the unit is off. <At delivery> 1 2 3 4 5 6 Set for each capacity. 1 2 3 4 5 6 1 2 3 4 5 6 MODELS PVFY-P24, 30E00B SW3 ON OFF 1 2 3 4 5 6 7 8 9 10 PVFY-P12, 18, 36, 48, 54E00B Indoor controller board SW3 Set while the unit is off. ON OFF 1 2 3 4 5 6 7 8 9 10 Indoor controller board PVFY-P12~54E00B ON OFF MODELS Set while the unit is off. <At delivery> 1 2 3 4 5 :The DipSW setting is effective during unit stopping ( remote controller OFF ) for SW1,2,3 and 4 commonly and the power source is not required to reset. Specifications are subject to change without notice. © 2013 Mitsubishi Electric US, Inc. Switch Pole 1 SW12 SW11 90 1 90 1 23 78 45 6 45 6 10 Address setting should be done when network remote controller (PAR-F25MA) is being used. 78 78 78 90 1 23 45 6 Rotary switch 90 1 Address can be set while the unit is stopped. <At delivery> 45 6 SW11 23 SW12 2nd digit address setting Remarks Address board SW12 23 SW11 1st digit address setting Operation by switch This is the switch to be used when the indoor unit is operated with R2 series outdoor unit as a set. Address board <At delivery> SW14 23 F01 45 6 CDE AB CDE AB F01 45 6 789 Note: 1 SW14 23 SW14 Connect ion No setting. Rotary switch Note: 1 789 Note 1: The DipSW setting is effective while the unit is not operating (remote controller OFF) for SW 11, 12, 14, and 5. 19 Specifications are subject to change without notice. © 2013 Mitsubishi Electric US, Inc. MANUFACTURED FOR: MITSUBISHI ELECTRIC US, INC. Specifications are subject to change without notice. © 2013 Mitsubishi Electric US, Inc.